Validation and reliability of the Dutch version of the EORTC QLQ-NMIBC24 Questionnaire Module for patients with non-muscle-invasive bladder cancer

Ripping, Theodora M.; Westhoff, Ellen; Aaronson, Neil K.; Van Hemelrijck, Mieke; Rammant, Elke; Witjes, J. Alfred; Kiemeney, Lambertus. A.; Aben, Katja K. H.; Vrieling, Alina

doi:10.1186/s41687-021-00372-4

Journal of Patient-Reported Outcomes

Table 4 Standardised factor loadings for the EORTC QLQ-NMIBC24 for 541 NMIBC patients participating in UroLife (confirmatory factor analysis)

From: Validation and reliability of the Dutch version of the EORTC QLQ-NMIBC24 Questionnaire Module for patients with non-muscle-invasive bladder cancer

Scales and items	Item #	Item topic	Standardized factor loadings^b
Urinary symptom	Item 31	Have you had to urinate frequently during the day?	0.682
	Item 32	Have you had to urinate frequently at night?	0.622
	Item 33	When you felt the urge to pass urine, did you have to hurry to get to the toilet?	0.768
	Item 34	Was it difficult for you to get enough sleep, because you needed to get up frequently at night to urinate?	0.593
	Item 35	Have you had difficulty going out of the house, because you needed to be close to a toilet?	0.586
	Item 36	Have you had any unintentional release (leakage) of urine?	0.334
	Item 37	Have you had pain or a burning feeling when urinating?	0.497
Malaise	Item 38	Did you have a fever?	0.159
Malaise	Item 39	Did you feel ill or unwell?	0.591
Future worries	Item 41	Did you worry about having repeated bladder treatments (cystoscopies or instillations)?	0.618
	Item 42	Were you worried about your health in the future?	0.692
	Item 43	Did you worry about the results of examinations and tests?	0.700
	Item 44	Did you worry about possible future treatments?	0.736
Bloating and flatulence	Item 45	Did you have a bloated feeling in your abdomen?	0.696
Bloating and flatulence	Item 46	Have you had flatulence or gas?	0.339
Sexual functioning	Item 47	To what extent were you interested in sex?	0.700
Sexual functioning	Item 48	To what extent were you sexually active (with or without sexual intercourse)?	0.542
Male sexual problems	Item 49	For men only: Dit you have difficulty gaining or maintaining an erection?	0.870
Male sexual problems	Item 50	For men only: Did you have ejaculation problems (e.g. dry ejaculation)?	0.827
Intravesical treatment issues	Item 40	Did you have trouble arranging your life around the repeated bladder treatment appointments (cystoscopies or instillations)?	0.564
Sexual intimacy	Item 51	Have you felt uncomfortable about being sexually intimate?	0.690
Risk of contaminating partner	Item 52	Have you worried that you may contaminate your partner during sexual contact with the bladder treatment you have been receiving?	0.821
Sexual enjoyment	Item 53	To what extent was sex enjoyable for you?	0.941
Female sexual problems^a	Item 54	For women only: did you have a dry vagina or other problems during intercourse?

^aThis scale was excluded from the confirmatory factor analysis
^bAll p values were < 0.0001

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